Reuters - Three Iranians were killed in an air strike on a Syrian air base on Sunday, Iran�s Fars news agency said.

The semi-official Fars news said on Monday that �Three defenders of the shrine, Seyed Ammar Mousavi, Mehdi Lotfi Niasar and Akbar Zavar Jannati� were killed in the air strike �carried out by the Zionist regime�s fighter jets.�

Iran calls its fighters in Syria the defenders of the shrine as it says the forces are there to protect the Zeinab Shrine, a Shia holy site near Damascus.

Reporting by Bozorgmehr Sharafedin; Editing by Toby Chopra